Rotary engine.



W1. DONER.

ROTARY ENGINE.

APPLICATION FILED DBO. 2, 1911.

Patented Nov. 4, 1913.

2 sHEETss11EET 1.

, W. F. DONER.

ROTARY ENGINE.

APPLIGATION FILED DEC. 2, 1911.

I Patented Nov. 4,

1913. 2 SHEET$$HEET 2.

-- i as? WILLIAM; FRANCIS DONER; OF WINNIFEG,, MANITOBA. GANADA.

none-RY ENGIHE.

now ere.

Specification ofLetters Eatent.

Application filed- December 2; 1911.1 Serial no. ceases.

To all whom it may concern:

Be it, known that I, WILLIAM FRANCIS Donna, of the city of Winnipeg, in the Province of Manitoba, Canada, have inven ted certain new and useful Improvements in Rotary Engines, of which the following is the specification.

My invention relates to a rotary engine,

and the object of the invention is to pro-v vide a simply constructed, eflicient, and durable engine in which there are few parts so that it does not get out of working order readily.

A further objectof the inventionis to construct the engine so that the rotating part darries no movable members, therebyprcscrving at all times during the rotation an even balance around the centerof rota tion.

"With the above objects in view the invention consists essentially in the arrangement and construction of parts hereinafter more particularly described, reference being had to'the accompanying drawing in which Figure 1 is a side elevation of the corn-' plete machine- Fig, 2 is a sectional view centrally through the same, the section being" taken in the plane denoted by the line X X, Fig. 2;. Fig. 3 is a side elevation of the engine with one of the side plates re moved.- Fig. 4; is an enlarged detailed. vertical sectional vview through one of the pistons. 1 drawings like characters of refer- In'the ence indicate corresponding partsin each =figure.

1 and 2 represent side plates supplied at the bottom with foot pieces 3 and l and cast and passes rot'at'ably between the members 5 and 6, and provided with projecting pieces 11 spaced at suitable intervals which pass into. he piston chamber 7.

12 re p tons supplied each wit a pair of extending gs 13 which are bolte permanently to t eprojecting pieces 11. The-pis tons are designed to fit snugly within the cylinder formed by the members trend fi and are each constructed oftwo pa rtsr a back cup-shaped member 1a nd a frcntdisk 15, the disk being held to the cup shapcd member by a spring 16; i

17' are wearing, split ringsslipped on to the cup-shaped member 1a and having the'itt outer faces bearing against the walls of the piston chamber: The edges of the disks are beveled at 15', and. the adjoining 'iaees of the rings 17 are beveled out at 17 torcceive them i Y The above piston construction is such that the disks will have a tendency to'spreadliie rings against the chamber walls and fern: a tight joint upon the charge being ignited within the piston chamber as later described; 18 and 19 are two circular plates centered.

on the shaft and bolted to, each othei through the disk 10. The plates are supplied with outwardly directed flanges 26 which serve to break the joint formed hetween the disk and the plates 1 and 2 and carry pins 21 for a purpose later described.

'22 represent spark plugs screwed into the cylinder forming member 5 and opening to the piston chamber as is usual.

23 are tripbars slidably mounted in the arms9 and having their upper endsconnected with the spark plugs, and their lower ends-engage'able with the successive pins '21 upon the shaft being rotated. The lower ends-of the trip bars are out at an incline so that they will be raised by'the pins 21 as the pins pass them. Spiral springs 24 tie the trip bars to the arms so that they are con-- tinuously pressed toward the shaft 8.

I have not enlarged upon the construction of the spark plugsas any form of plug could be used which will allow the contact to be made'and brokenby the' action of the? trip. bars 23. v v

25' are gates of greater width than the piston chamber, which atesare slidable ingrooves 26 formed in ti e 'cylinder forming r members 5 and 6 as well as in the guide plates 27" which extend outwardly from plates 1 and2. It is to be noticed also that the wall" of the piston chamber is grooved across at 28 to receive the lower edge of the gates when they .are in their inner positions. On account of this constructlon there is no possibility of leakage pastthe gates once they are closed across the piston chamber.

29 are bell cranks pivotally mounted on the springs to perform their function of the gates are at this time reach, respectively-the ing pieces normally holding the gates closed. Spiral springs 33 are secured tothe bell cranks and to the plate 6, which springs tend to hold the gates within the piston chamber.

, 34 are inlet ports, and 35 exhaust ports passing through the Walls of the chamber.

-' The ports 34: are connected up with any suitable source of gas supply, such as mixed gasolenc and air, while those 35 are connected u with suitable exhaust pipes.

The operation of the engine is now described assuming that the shaft is'primarily rotated and the charges drawn into the iston chambers through the ports 34 and also that the ports are in the positions shown in Fig. 3 of' the drawing. There will be a charge in the iston chamber at the points A, B, C, and D between the respective gates 25 and the adjoining piston. These charges will be ignited and exploded by the action of the trip bars on the spark plugs at. set periods, so hat the pistons will be forced in the direction indicated by the arrow, F ig..3, as it is to be remembered stationary and in their inner position. This will cause the shaft to rotate as the pistons are carried by the disk 10. The exploded gases expanding force the pistons pastthe bars 31 until they adjoining gates of the projectsuch gatesand The spent charges escape the rewhen the inclined edges 11 11 will pass under raise them. through the exhaust ports as soon as spective pistons pass the ports.

What'I claim as my invention is: l. The combination comprising, a suitably supported rotatable shaft, "a circular disk mounted on the shaft and supplied at its edge with projecting pieces having each an inclined ergo, pistons permanently secured to the projecting pieces, connected,

to tightly closed,

plates forming an annular piston chamber adapted to receive the pistons, such piston chamber being supplied with suitably lo cated inlet and outlet ports and being fitted with conveniently located spark plugs, spring pressed normally closed gates pass ing across the piston chamber and located at set distances apart, said gates, when closed, having their inner ends and edges received within grooves formed in the side plates, pivoted bell cranks connected to the outer ends of the gates and actuating bars carried by the bell cranks and entering the piston chamber, spid actuating bars being arranged to engage with the inclined edges of the projecting pieces to positively close the gates, as and for the purpose specified.

2. In a rotary enginc, the combination with a suitably supported rotatable shaft, of a circular disk' fixed on the shaft and having suitably spaced projecting pieces extending from the edge thereof, and pistons permanently secured to the projecting pieces, said pistons comprising each a rear cup-, shaped member, a split ring fitted on to the same and extending there beyond, and

having its forward edge tapered, a disk having a tapering edge engageable with the tapered edge of the ring and a flat spring connecting tl1e 'disk with the cup-sluiped member, as and for the purpose specified.

3. The combination comprising, a suitably supported rotatable central shaft, a disk fixed on the shaft, pistons located on the periphery of the disk and placed at suitable intervals, a pair of circular plates centered on the shaft on either side of the disk, said lates having their peripheral edges bent in opposite directions, connected side plates forming a piston chamber and receiving the pistons and admitting the edge of the disk, said piston chamber being supplied with suitable inlet and outlet ports, spark plugs, located at suitable wall of the piston chamber, slidable gates arranged at intervals around the piston chamber and designed to pass across the pis-- ton chamber, and means for operating the gates, as and for the purpose specified;

Signed at Winnipeg, in the province of Manitoba,-this 17th day of June, 1911.

WILLIAM FRANCIS DONER.

In the presence of G. S. ROXBURGH, J. K. ELKIN..

intervals in the- 

